Citizen Promaster Sea BN0191-55L, 45mm, Blue Dial
Citizen Promaster Sea 45mm, Blue Dial Silver Stainless Steel Bracelet
The Citizen Promaster Sea BN0191-55L is a men's solar-powered dive watch featuring a blue dial, 45mm stainless steel case, and 200m water resistance.
This page contains affiliate links. We may earn commission on qualifying purchases. Learn more
About this item
- Iconic Promaster watches with advanced functions designed for deep-sea adventures.
- Features 3-hand timekeeping and a date display.
- Crafted from durable silver-tone stainless steel.
- Equipped with luminous hands and markers for visibility, protected by a mineral crystal.
- Powered by any light with Eco-Drive technology, eliminating battery changes.
- ISO Certified, 200M Water Resistant, and comes with a 5-year limited warranty.
Top Highlights
- Brand
- Citizen
- Model Name
- Promaster
- Model Number
- BN0191-55L
- Department
- Men
- Item Type
- Diving Watch
- Manufacturer
- Citizen Watch Company
- Country of Origin
- Japan
- First Available
- November 15, 2023
Features & Specs
- Display
- Analog
- Movement Type
- Quartz
- Caliber
- E168
- Additional Features
- Eco-Drive
- Complications
- Date
- Battery
- No battery (solar)
- Strap Type
- Bracelet
- Case Material
- Stainless steel
- Case Size
- 45.0 mm
- Case Thickness
- 12.0 mm
- Lug Width
- 22.0 mm
- Weight
- 453.6 g
- Water Resistance
- 200 m
- Sport Type
- Diving
- Strap
- Stainless steel
- Clasp
- Push Button Foldover Clasp With Safety
- Closure Type
- Push-Button
- Crystal
- Crystal
- Dimensions
- 8 x 3 x 3 inches; 1 pounds
Style
- Style Name
- Watches
- Dial Shape
- Round
- Dial Color
- Blue
- Band Color
- Silver-Tone
- Face Style
- Crosshair, Tapisserie, or another compatible style
- Collection
- Promaster Sea
- Dial Markers
- Luminous hands, Luminous markers
Will it fit your wrist?
Best on 7.5–7.9 in (19.0–20.0 cm) wrists
A 45 mm case sits just right on these wrists. If your wrist is 7.9–8.3 in, it looks smaller and more understated. If your wrist is 7.1–7.5 in, it looks bigger and bolder.
Measure your wrist and see what fitsA rough guide based on case diameter only.
Is this watch big or small?
73% of the men's watches we list are smaller than this one
The most common men's size is 42 mm (174 models). 75 models are 45 mm, like this one.
All our watch size dataDescription
The Citizen Promaster Sea BN0191-55L stands as a robust and reliable companion for enthusiasts of aquatic adventures and daily wear. This men's Eco-Drive dive watch, part of Citizen's renowned Promaster collection, combines practical functionality with a distinctive aesthetic, appealing to those who value sustainability and performance. Its bold design and dependable features make it suitable for both professional diving and casual urban exploration.
At its core, the BN0191-55L is powered by Citizen's proprietary Eco-Drive solar movement, ensuring continuous operation without the need for battery replacements. Encased in a durable 45mm stainless steel case, it boasts an impressive 200m water resistance, making it suitable for serious diving. The watch features a clear mineral crystal protecting its vibrant blue dial, which is equipped with luminous hands and markers for optimal readability in low-light conditions.
A key highlight of this model is its ISO certification, a testament to its adherence to rigorous dive watch standards. This certification provides assurance of its reliability and safety for underwater use. The watch is completed with a comfortable stainless steel bracelet and a secure push-button foldover clasp with safety, offering both style and peace of mind during any activity.
Frequently Asked Questions
How deep can I go with the Citizen Promaster Sea BN0191-55L?
The Citizen Promaster Sea BN0191-55L is ISO certified and boasts 200m water resistance. This means it is suitable for professional marine activity and serious surface water sports, but not for saturation diving.
What movement powers this Promaster Sea model?
This Promaster Sea BN0191-55L is powered by Citizen's Eco-Drive solar movement. It converts any light source into energy, storing it in a power cell, so it never requires a battery replacement.
What is the warranty period for this Citizen dive watch?
The Citizen Promaster Sea BN0191-55L comes with a 5-year limited warranty. This provides extended coverage for manufacturing defects, offering peace of mind for your investment.
What wrist size is suitable for the 45mm Citizen Promaster Sea BN0191-55L?
With its 45mm case diameter, the Citizen Promaster Sea BN0191-55L is best suited for medium to large wrists, typically 7 inches (18 cm) and above, to ensure a comfortable and balanced fit.
How often should I service my Eco-Drive watch?
Eco-Drive watches like the BN0191-55L generally require less frequent service than mechanical watches. While no battery changes are needed, a general inspection every 5-7 years by a qualified watchmaker can help maintain its seals and overall performance.
Editor's take
The Citizen Promaster Sea BN0191-55L represents an accessible entry into serious dive watch functionality, embodying Citizen's commitment to robust, eco-conscious timekeeping. Designed for the active individual, this timepiece from the iconic Promaster Sea collection offers a blend of durability and sustainable technology, making it a compelling choice for both underwater exploration and everyday adventure. It caters to those who seek a reliable tool watch without the need for frequent maintenance.
Central to its appeal is Citizen's proprietary Eco-Drive solar movement, which harnesses any light source to power the watch, effectively eliminating the need for battery changes. This innovative technology is housed within a substantial 45mm stainless steel case, providing a commanding presence on the wrist. The watch boasts an impressive 200m water resistance and is ISO certified, ensuring its performance and safety for professional diving. A durable mineral crystal protects the vibrant blue dial, which features highly legible luminous hands and markers.
While the mineral crystal offers good shatter resistance, it is generally more prone to scratches compared to sapphire crystal, which is often found on higher-end dive watches. This might be a consideration for users who anticipate very rough wear or prefer maximum scratch protection. However, for its price point and the robust build quality, the choice of mineral crystal is a reasonable compromise that keeps the watch accessible.
Ultimately, the Citizen Promaster Sea BN0191-55L is an excellent choice for divers, outdoor enthusiasts, and anyone seeking a dependable, low-maintenance watch with a strong aesthetic. Its Eco-Drive technology and ISO certification make it a practical and environmentally friendly option. For those prioritizing ultimate scratch resistance, exploring models with sapphire crystal might be an alternative, but for a versatile and reliable diver, this Promaster offers exceptional value.
In categories
From the manufacturer

Promaster Dive Chronograph
The Citizen Promaster BN0191-55L is engineered for underwater reliability. Its 45.0mm stainless steel case and bracelet provide durability, complemented by a 200m water resistance rating. This quartz-powered diver offers precise timekeeping for aquatic environments.

Engineered for Depths
The Promaster BN0191-55L features a robust 45.0mm stainless steel case, designed to withstand pressure. Its crystal protects the dial, ensuring legibility during dives. The stainless steel bracelet secures the watch, providing reliable wear in challenging conditions.
THE DETAILS
Safety Fold Over Clasp with Push Buttons

OWN YOUR STYLE- DISCOVER MORE
The Citizen Promaster BN0191-55L integrates functional dive watch aesthetics with everyday wearability. Its 45.0mm stainless steel case and matching bracelet present a cohesive design. This timepiece offers robust construction suitable for various environments, making it a versatile choice.

CITIZEN PARTNERSHIPS
The official timepiece partner of Disney parks, runDisney sponsorship, events and more.
Warranty & Support
Manuals & Documents
User reviews
No reviews for this product yet. Sign in to write the first review; if you don't have an account, you can register from the sign-in screen.








